<!DOCTYPE html>
<html lang="zh-cn" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
</head>
<body style="text-align: center;">
    hello world!
    <span th:text="${userName}" style="color:red">用户</span>
</body>
</html>